How do you make the EXP option work? I go into my upgrade screen and hit 7 but then none of my exp goes up. My general exp also bugs out and just shows a big number and I cant upgrade anything. Am i doing something wrong? Did I miss a step?

first thanks for fast updating games,Ok after some testing on each individual cheat i came across a issue i don't know if anyone else has or if it something they cant change, option 2 Inf Stamina seems to not like the game, when activated and changing areas, when example you start a mission that takes you to a loading screen it crash the game, If turned off before changing or starting and ending a mission that requires a loading screen turn off before it goes to loading. If this is a bug that can be fixed or it needs to be noted if this is something that cant be changed please.